Using the information from the food chain. Why do the plants grow better when there are a lot of ladybirds in the garden?
There are more ladybirds to feed on the aphids. There are fewer aphids to feed on the plants.
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15
Study the food chain. What is the source of energy for the plant?
The sun
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15
What do the fish provide the plants?
Carbon dioxide for photosynthesis. Animal waste can act as a fertiliser/ Dead animals decompose to become fertiliser.
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15
Complete the food web below.
Check the diagram.
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15
Identify the food producers from the food web.
Elodea and Algae
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15
Explain how organisms Y and Z are affected when organism X multiplies rapidly.
There are lesser Y as there is less light to photosynthesize. With fewer Y, Z has less oxygen and food.
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15
Study the graph and food chain below. The population of the aphids started to change rapidly after Week 4 as shown in the graph. Why did the population increased?
There are fewer ladybirds feeding on the aphids.
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thief
Give points!
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25
gold
Win 50 points!
Okay!
shark
Other team loses 25 points!
Okay!
banana
Go to last place!
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15
Identify the predators from the food web.
Dragonfly nymph and Tilapia.
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boom
Lose 50 points!
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gift
Win 10 points!
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fairy
Take points!
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25
lifesaver
Give 15 points!
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15
Complete the food web below
Check the diagram.
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15
Other than food, state 2 other things that the plants provide the fish.